| 1 | C & M Exploration LLC | Tulsa, OK 74159-1331 | Oil & Gas Operator | Jun 2014 |
| 2 | Canan Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 3 | Canyon Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 4 | Carrizo Oil & Gas, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 5 | CD Consulting & Operating Co. | Bridgeport, TX 76426 | Oil & Gas Operator | Apr 2024 |
| 6 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | Apr 2024 |
| 7 | CH4 Energy LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2006 |
| 8 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2023 |
| 9 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2024 |
| 10 | Chief Oil & Gas LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2022 |
| 11 | Chief Operating LLC | Dallas, TX 75225 | Gas Operator | Mar 2009 |
| 12 | Circle Ridge Production, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 13 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 14 | Crow Creek Operating Co II LLC | Houston, TX 77252 | Oil & Gas Operator | Nov 2011 |
| 15 | Cso Consulting | Bridgeport, TX 76426 | Oil & Gas Operator | Mar 2020 |
| 16 | Cumming Company, Inc. The | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2024 |